New sediment provenance approach based on orthonormal log ratio transformation of geochemical and heavy mineral data: Sources of eolian sands from the southeastern Adriatic archipelago

Razum, Ivan; Lužar-Oberiter, Borna; Zaccarini, Federica; Babić, Ljubomir; Miko, Slobodan; Hasan, Ozren; Ilijanić, Nikolina; Beqiraj, Enkeleida; Pawlowsky‐Glahn, Vera

doi:10.1016/j.chemgeo.2021.120451

Cited by 14 publications

(3 citation statements)

References 41 publications

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“…Components not related to the original sand composition, such as authigenic carbonate nodules, penecontemporaneous shell fragments and organic fragments, were excluded from the final calculations. Although all the grain components were analysed, only those with similar hydraulic behaviour (quartz, feldspars and volcanic, metamorphic and sedimentary lithics) were considered for provenance analyses (Fontana, 1991; Garzanti et al., 2008), as transport invariant components are essential for these type of studies (Garzanti et al., 2008; Razum et al., 2021; Weltje, 2004). Along a single core, only one sample was collected from each sand body, assuming low compositional variations within each sediment body (Bruno et al., 2021; Fontana et al., 2019; Lugli et al., 2004, 2007).…”

Section: Methodsmentioning

confidence: 99%

Multi‐source detrital contributions in the Po alluvial basin (northern Italy) since the Middle Pleistocene. Insights into sediment accumulation in intermediate sinks

Demurtas,

Fontana,

Lugli

et al. 2024

Basin Research

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Integrated stratigraphic‐compositional studies on alluvial successions provide a valuable tool to investigate the provenance of detritus in multi‐source systems. The Po Plain is an intermediate sink of the Po‐Adriatic source‐to‐sink system, fed by rivers draining two orogens. The Alps are characterized by extensive outcrops of plutonic‐metamorphic and ultramafic rocks to the north‐west and of Mesozoic carbonates to the east (Southern Alps). The Northern Apennines, to the south, are dominated by sedimentary successions. The Po River flows from the Western Alps to the Adriatic Sea, interacting with a dense network of transverse tributaries that drain the two orogens. Stratigraphic, sedimentological and compositional analyses of two 101 and 77.5 m‐long cores, recovered from the Central Po Plain, reveal the stacking of three petrofacies, which reflects distinct provenance and configurations of the fluvial network. A South‐Alpine sedimentary input between MIS 12 and MIS 10 is testified by petrofacies 1, characterized by carbonate‐ and volcanic‐rich detritus from rocks exposed in the Southern Alps. A northward shift of the Po River of more than 30 km is marked by a quartz‐feldspar and metamorphic‐rich detritus (petrofacies 2), similar to modern Po River sands. This dramatic reorganization of the fluvial network likely occurred around MIS 9–MIS 8 and is possibly structurally controlled. A further northward shift of the Po River and the onset of Apennine sedimentation in the Late Holocene is revealed by petrofacies 3, rich in sedimentary lithics from the Apennine successions. The results of this study document how compositional analysis, if framed in a robust stratigraphic picture, may provide clues on the evolution of multi‐source alluvial systems.

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Section: Methodsmentioning

confidence: 99%

Multi‐source detrital contributions in the Po alluvial basin (northern Italy) since the Middle Pleistocene. Insights into sediment accumulation in intermediate sinks

Demurtas,

Fontana,

Lugli

et al. 2024

Basin Research

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“…Although all grain components were analysed, only those with similar hydraulic behaviour (quartz, feldspars and lithic fragments-volcanic, metamorphic and sedimentary) were considered for provenance analyses (see [32]). Considering that the transport invariant components are essential for provenance analyses as demonstrated by Weltje (2004) [33], Garzanti et al, (2008) [32] and Razum et al, (2021) [34]. Along single core, one sample per stratigraphic unit was collected, based on the assumption of low intra-unit compositional variations, see Lugli et al, (2004Lugli et al, ( , 2007 [29,30], Fontana et al, (2019) [13] and Bruno et al, (2021) [14].…”

Section: Methodsmentioning

confidence: 99%

Evolution of the Po–Alpine River System during the Last 45 Ky Inferred from Stratigraphic and Compositional Evidence (Ostiglia, Northern Italy)

et al. 2022

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The stratigraphic and compositional study of three sediment cores recovered close to the Po River near Ostiglia provides clues on changes in fluvial dynamics at the transition from the last glacial to the present interglacial. Upper Pleistocene units are dominated by sands with high content in volcanic lithics, denoting high sediment supply from the south-Alpine fluvio-glacial tributary system. The Early–Mid Holocene unit, peat-rich and barren in fluvial sands, results from low sediment supply and waterlogging, encompassing the maximum marine ingression. The Late Holocene unit, characterized by fluvial-channel sands with lower content in volcanics and relatively abundant metamorphic lithics, records the Po River sedimentation since the Late Bronze Age. Late Holocene sands show a lower content in siliciclastic lithic fragments (supplied mainly by Apennine tributaries) compared to modern Po River sands. This distinctive composition could reflect the diversion of Apennine sediments into a southern Po River branch during the Late Bronze Age and into an Apennine collector flowing south of Ostiglia during Roman times and the Middle Ages. The integrated stratigraphic-compositional methods used in this study permitted to reconstruct the major climate-related changes in sediment dispersal and may be potentially applied to other alluvial and coastal settings.

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“…[2,3,7,69,73], and on the mainland, a cold and dry climate prevailed [4]. In that period, in the southwestern part outside of the bay, aeolian sand was deposited from the Albanian shelf by wind (Figure 21) [74][75][76]. A geomorphological barrier of hills-the Elafiti "highlands" (today the chain of the Elafite Islands)-prevented the eolian sand from being deposited, to a large extent, into the bay, and was mainly deposited on the Elafite "highlands" and the lowlands between Mljet Island and the Elafite Islands (highlands).…”

Section: Paleoenvironmental Reconstruction Considering Sea-level Fluc...mentioning

confidence: 99%

Late Quaternary Evolution of a Submerged Karst Basin Influenced by Active Tectonics (Koločep Bay, Croatia)

Šolaja¹,

Miko

Brunović

et al. 2022

JMSE

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Koločep bay is a 30 km elongated karst basin located between the Elafiti Islands and the mainland with a NW–SE general direction. The bay lies within the seismically active southern Dalmatia zone. Irregular grid sub-bottom profiles and two legacy reflection seismic profiles have been used to determine the overall morphology of the bay and to establish the seismic stratigraphy of its sedimentary infill. Three major seismic–stratigraphic units have been identified in the upper ~50 m of the ~120-meter-thick sedimentary sequence that lies above the karstified limestone bedrock. The karst polje basin was flooded due to sea-level rise before 12.1 kyr BP. The morphology of the bay implies complex influences of Late Glacial meltwater discharges, aeolian sand deposition, the existence of paleo–ponor/karst spring zones and buried Pleistocene river channels. The Pleistocene seismotectonic units are deformed in the NW and SE parts of the basin. The central part of the basin has no signatures of intensive tectonic activity during the Holocene. A major erosion event was identified that led to the formation of a basin within the older sedimentary infill. In the southern part of the basin, we have evidence of Holocene tectonic activity with the formation of erosional scarps on the seafloor of the bay.

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New sediment provenance approach based on orthonormal log ratio transformation of geochemical and heavy mineral data: Sources of eolian sands from the southeastern Adriatic archipelago

Cited by 14 publications

References 41 publications

Multi‐source detrital contributions in the Po alluvial basin (northern Italy) since the Middle Pleistocene. Insights into sediment accumulation in intermediate sinks

Multi‐source detrital contributions in the Po alluvial basin (northern Italy) since the Middle Pleistocene. Insights into sediment accumulation in intermediate sinks

Evolution of the Po–Alpine River System during the Last 45 Ky Inferred from Stratigraphic and Compositional Evidence (Ostiglia, Northern Italy)

Late Quaternary Evolution of a Submerged Karst Basin Influenced by Active Tectonics (Koločep Bay, Croatia)

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